Why does Antarctica’s famous Blood Falls flow red?:Scientists finally crack 100-year-old mystery; know why its water doesn’t freeze even below 0°C

A waterfall that looks like flowing blood has baffled scientists since it was first discovered in Antarctica in 1911. Hidden beneath the Taylor Glacier, this crimson stream has remained one of the continent’s biggest mysteries. Now, researchers have finally explained the science behind Blood Falls, and the discovery could even help scientists search for life beyond Earth. A recent study published in Antarctic Science explains where the red water comes from, why it never freezes, and what it could reveal about the possibility of life on other planets. What is Blood Falls? Blood Falls is a bright red stream that flows from the Taylor Glacier into Lake Bonney in Antarctica’s McMurdo Dry Valleys. The waterfall gets its name because its reddish colour resembles flowing blood. However, scientists have confirmed that it has nothing to do with blood or volcanic activity. Instead, it is made of iron-rich salty water, also known as iron-rich brine, that has remained trapped beneath the glacier for millions of years. Discovered more than a century ago Blood Falls was first discovered in 1911 by Australian geologist Thomas Griffith Taylor during one of Antarctica’s early scientific expeditions. Its unusual appearance puzzled explorers for decades, leading to several theories about its origin. For years, no one knew exactly where the red water came from or how it managed to escape from beneath such a massive glacier. Scientists finally solve the mystery According to the study published in Antarctic Science, the source of Blood Falls is an ancient underground reservoir filled with extremely salty, iron-rich water beneath the Taylor Glacier. As the glacier slowly moves, enormous pressure builds beneath the ice. This pressure forces the trapped brine through tiny hidden channels inside the glacier until it finally reaches the surface. Once the water comes into contact with air, the dissolved iron reacts with oxygen. This process, known as oxidation, is the same chemical reaction that causes iron to rust. The reaction forms iron oxides, giving the water its dramatic reddish-brown colour. Hidden channels inside the glacier One of the biggest breakthroughs came in 2017, when researchers from the University of Alaska Fairbanks used advanced radar technology to look beneath the glacier. Their scans revealed a network of hidden, pressurised channels carrying the salty water through the ice. The team discovered that the brine travels nearly 300 metres inside the glacier before emerging at Blood Falls. This finding helped explain how water could continue flowing beneath one of the coldest places on Earth. Also read: Can a Chinese app really turn off an ATM?: Viral claim that BAT-BMS app can hack the machine is misleading; know the technical reality of ATM security

Why doesn’t the water freeze? This is one of the most fascinating parts of the mystery. Normally, water freezes at 0°C, but Blood Falls contains extremely high levels of dissolved salt. Scientists say the brine is about three times saltier than seawater, which lowers its freezing point significantly. As a result, the water remains liquid even in Antarctica’s sub-zero temperatures. Researchers also explain that heat released during the freezing process helps keep the salty water flowing beneath the glacier. Because of this, Taylor Glacier is now considered the coldest known glacier on Earth with continuously flowing liquid water. An ancient underground world Blood Falls is not just unusual because of its colour. Scientists have discovered that the ancient salty water contains microorganisms that have survived beneath the glacier for potentially millions of years, completely cut off from sunlight and Earth’s atmosphere. The brine also contains minerals and elements such as: These materials help researchers understand both the chemistry of Blood Falls and how tiny organisms can survive in one of Earth’s harshest environments. Also read: ‘Watch Video, Earn Money’:Beware of these ads! Scammers will empty accounts, understand from experts how to avoid this fraud

A mystery solved, but many questions remain Scientists believe similar salty reservoirs may exist beneath the frozen surfaces of Mars and Europa, one of Jupiter’s icy moons. If microorganisms can survive for millions of years beneath Antarctica’s glaciers, it raises the possibility that life could also exist in similar hidden environments elsewhere in our solar system. Although scientists now understand why Blood Falls is red and why it never freezes, the site continues to be one of Antarctica’s most remarkable natural wonders.